Under the two assumptions of rational investors and enough competition,we come up with the R-v curve of Venture Capital market,and based on which,the theory to utility selection of investors is established And then we apply the theory to analyze the effects of a new type of tax-insurance tax We do hope something we have done here is helpful to the development of Chinese Venture Capital Industr

It fi- nances by means of unemployment insurance tax,which legislative and implementation protection level is very high.

Thought for Theory Problems of Social Insurance Tax;

Levying social insurance taxes in lieu of the current money-raising pattern,is the tendency of international development,and has gradually gained attention of theory community and some related departments in China.

To levy social insurance tax is related to distribution between many interests groups and these groups can influence governmental policies by using different methods.